What are the factors affecting the induced emf of a transformer?
The induced e.m.f. is proportional to the number of turns in a coil. The speed at which the conductor moves through the magnetic field. The length of the conductor.
What are the factors that affect transformer?
Factors That Affect the Efficiency of a Transformer
- The heating effect of current in a coil. Power is lost as heat I2R whereby I is the current flowing through the coil and R is the resistance of the coil.
- Heating effect of induced eddy currents. In the iron core.
- Magnetization of the Iron Core.
- Flux leakage.
What factors affect the amount of induced electromotive force emf in a transformer?
The size of the voltage can be varied by three factors:
- The size of the magnetic field. The more flux lines there are, the more flux lines there are for the conductor to cut.
- The active length of the conductor.
- The speed at which the conductor passes through the field.
On what factors the output voltage depends in transformer?
The total voltage induced into the secondary winding of a transformer is determined mainly by the ratio of the number of turns in the primary to the number of turns in the secondary and by the amount of voltage applied to the primary.
What four factors affect the magnitude of the induced emf?
The area of the coil, how long it takes for changes to occur, how many turns of wire in coil, or the magnetic field part that’s perpendicular to the plane of the coil could affect the magnitude of induced emf in a wire coil.
What are the factors that affect the magnitude of the induced emf and the magnitude and direction of the induced current?
The number of turns of the coil:As the number of turns increases, the magnitude of the induced current increases.
What affects transformer efficiency?
The efficiencies of power transformers normally vary from 97 to 99 percent. The power supplied to the load plus resistive, eddy current, hysteresis, and flux losses must equal the input power. The input power is always greater than the output power.
What are the factors which reduces the efficiency of the transformer?
(ii) Copper loss: Due to to resistance of the winding of primary and secondary coil some electrical energy is always converted into heat energy. (iii) Iron loss: The varying magnetic field produces eddy current in the iron case which leads to the wastage a energy in the form of heat.
What are the factors that affect the magnitude of the induced emf and the induced current magnitude and direction?
What is basic cause of induced emf?
The most basic cause of an induced EMF is change in magnetic flux. Placing a current carrying coil that is moving constantly in a stable and static magnetic field. This will cause a change in the area vector and hence, EMF will be generated.
What is the EMF equation of a transformer?
Therefore, RMS value of emf per turn = 1.11 x 4f Φm = 4.44f Φm. This is called the emf equation of transformer, which shows, emf / number of turns is same for both primary and secondary winding. For an ideal transformer on no load, E1 = V1 and E2 = V2 .
What are the factors affecting voltage?
The three factors, Surface area, Concentration and Temperature. Each of these factors will be explored to see how they affect the current generated by the cell.